Cover of a packaging machine



FIG. 1 is a perspective view of the cover of a packaging machine;

FIG. 2 is a front elevation view of the cover of a packaging machine;

FIG. 3 is a side view the cover of a packaging machine;

FIG. 4 is a reverse perspective view illustrating the cover of a packaging machine from an opposite direction from that shown in FIG. 1; and,

FIG. 5 is a front perspective view of the cover of a packaging machine on a packaging machine; the machine is not part of the ornamental design being claimed and is illustrated merely to disclose an embodiment of an environment in which the design can be associated, as represented by broken lines.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a cover of a packaging machine, as shown and described. 